Examine source code of LexyBee Extension

{
  "manifest_version": 2,
  "name": "LexyBee Extension",
  "description": "Pour ne rater aucun live de LexyBee cette extension te notifiera à chaque début de stream. @bricephiligane sur Twitter.",
  "version": "2.0",
  "browser_action": {
    "default_popup": "index.html"
  },
  "icons": {
    "64": "img/Favicon_OFF.png"
  },
  "background": {
    "scripts": [
      "js/jquery.js",
      "js/lexybee.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "js/jquery.js",
        "js/lexybee.js"
      ],
      "css": [
        "css/style.css"
      ]
    }
  ],
  "permissions": [
    "notifications",
    "alarms",
    "activeTab"
  ]
}